Phosphoria P-2 is an earth dam located in Polk County, Florida, built in 1979. It carries a Significant hazard potential classification.
Dam profile
NID height · 25 ft25 ft tall and 18,200 ft long, taller than 50% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Phosphoria P-2
The primary purpose of Phosphoria P-2 is tailings. Tailings dams contain waste material from mining operations — typically a slurry of finely ground rock left over after valuable minerals have been extracted. These structures require ongoing monitoring because tailings can contain heavy metals and other contaminants. The dam is owned by The Mosaic Company (private). It impounds the Peace River near Fort Meade.
The dam stands 25 feet tall and stretches 18,200 feet across, creates a reservoir covering 324 acres, and has a maximum storage capacity of 8,100 acre-feet. Completed in 1979, the structure is 47 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life.
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Location
| State | Florida |
| County | Polk |
| Nearest City | Fort Meade |
| River/Stream | Peace River |
| Coordinates | 27.81000, -81.89000 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 18,200 ft |
| Year Completed | 1979 (47 years old) |
Storage & Hydraulics
| NID Storage | 8,100 acre-ft |
| Max Storage | 8,100 acre-ft |
| Normal Storage | 6,900 acre-ft |
| Surface Area | 324 acres |
| Max Discharge | 720 cfs |
Ownership & Safety
| Purpose | Tailings |
| Owner | The Mosaic Company |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Emergency Action Plan | No |
Identifiers
| NID ID | FL00658 |
| Federal ID | FL00658 |
| More Info | State Dam Safety Program |